PAIA 2700/4700 Modular System

This PAIA Modular System was purchased in parts from the trunk of a Cadillac Hearse in DOA condition for $100. The synthesizer had one case partially completed and came with various unopened modules sealed in the original marked manilla envelopes from PAIA in the 1970's. Bon Harris of Nitzer Ebb passed this on for Boone from 13mg who just had it hiding in a storage space for over 10 years until I was able salvaging the system from him. 21 one days later, the system was functionally recording. It was missing some modules plus had a custom made PAIA ping pong stereo panning module. This was my first modular system constructed and as originally intended inspires electronic experiments for creating new synthesis circuits. Now after about 14+ months of searching for parts, One more VCO has been installed bring the total number at 6 4720s thus completing the second road case! FYI: PAIA 2700/4700 is ideal for expansion with Korg MS & Yamaha CS hertz/volts synthesizers. This web page is for documentation, modification, & experimentation providing other PAIA modular owners with technical information regarding all of the modules from the 2700/4700 series.

Documentation & Schematics

• 4720A Voltage Controlled Oscillator
• 4730 Multi-Modal Filter
• 4710 Balanced Modulator
• 2720-5 Control Oscillator / Noise Source
• 4712 Reverb Module
• 4712 Spring Reverb Schematic
• 4712 Spring Reverb Layout
• 4761 Road Case
• Using the 4700S
• Building the 2720 series modular
• Polyphony 0302 November 1977
• 4780 Sequencer Assembly Instructions
• 4780 Sequencer Using the Sequencer
• 4711 Mixer
• 4771 Power Supply
• 4740 Envelope Generator
• 2720-1 VCA schematic
• Paia 2720-3B Voltage Control Band Pass Filter Schematic
• Paia Paia 2720-3L Voltage Control Low Pass Filter Schematic
• Paia 2720-4 Function Generator Schematic
• Paia 2720-14 Sine converter Pulse width Moodulator Schematic
• PAiA 2720-12 Inverter/Buffer Assembly and Users Manual with Schematics
• 2720 Inverter Buffer schematic
• 2720-11 Envelope Follower
• 2720-8 Keyboard
• 2720-9 Glide
• 4762 / 4782 Road Keyboard
• 4783 Joystick Testing, calibration, and operations
• 4783 Joystick Applications article reprinted from Polyphony V3-3
• Demo 1 booklet
• Demo 2 booklet
• Demo 3 booklet
• Demo 4 booklet
• Demo Cassette booklet (combines all the above demo line pamphlets, plus more)

Polyphony Publishing

Polyphony Vol. 1 - Vol. 2 Index - (1.1 MB)

Polyphony - Vol. 1, Iss. 1 - 1975, 20 pgs. (12 MB)

Polyphony - Vol. 2, Iss. 1 - 1976, 24 pgs. (21.6 MB)
Polyphony - Vol. 2, Iss. 2 - 1976, 32 pgs. (20.9 MB)
Polyphony - Vol. 2, Iss. 3 - 1976, 44 pgs. (32.3 MB)
Polyphony - Vol. 2, Iss. 4 - Part 1 - 1976, 15 pgs. (25.9 MB)
Polyphony - Vol. 2, Iss. 4 - Part 2 - 1976, 17 pgs., 32 pgs. issue total (19.6 MB)

Polyphony Vol. 3 Index - (1 MB)

Polyphony - Vol. 3, Iss. 1 - Part 1 - July 1977, 14 pgs. (29.6 MB)
Polyphony - Vol. 3, Iss. 1 - Part 2 - July 1977, 18 pgs., 32 pgs. issue total (35.5 MB)
Polyphony - Vol. 3, Iss. 2 - Part 1 - November 1977, 15 pgs. (19.5 MB)
Polyphony - Vol. 3, Iss. 2 - Part 2 - November 1977, 17 pgs., 32 pgs. issue total (17.2 MB)
Polyphony - Vol. 3, Iss. 3 - Part 1 - February 1978, 17 pgs. (35.2 MB)
Polyphony - Vol. 3, Iss. 3 - Part 2 - February 1978, 19 pgs., 36 pgs. issue total (26.7 MB)
Polyphony - Vol. 3, Iss. 4 - Part 1 - April/May 1978, 18 pgs. (23.9 MB)
Polyphony - Vol. 3, Iss. 4 - Part 2 - April/May 1978, 22 pgs., 40 pgs. issue total (30.1 MB)

Polyphony Vol. 4 Index - (1.3 MB)

Polyphony - Vol. 4, Iss. 1 - Part 1 - July/August 1978, 19 pgs. (29 MB)
Polyphony - Vol. 4, Iss. 1 - Part 2 - July/August 1978, 17 pgs., 36 pgs. issue total (25.5 MB)
Polyphony - Vol. 4, Iss. 2 - Part 1 - September/October 1978, 25 pgs. (29.6 MB)
Polyphony - Vol. 4, Iss. 2 - Part 2 - September/October 1978, 19 pgs., 44 pgs. issue total (24.3 MB)
Polyphony - Vol. 4, Iss. 3 - Part 1 - November/December 1978, 25 pgs. (28.9 MB)
Polyphony - Vol. 4, Iss. 3 - Part 2 - November/December 1978, 19 pgs., 44 pgs. issue total (29.4 MB)
Polyphony - Vol. 4, Iss. 4 - Part 1 - January-March 1979, 17 pgs. (26.2 MB)
Polyphony - Vol. 4, Iss. 4 - Part 2 - January-March 1979, 23 pgs., 40 pgs. issue total (26.7 MB)

Polyphony Vol. 5 Index - (2.4 MB) - added 2/15/12

Polyphony - Vol. 5, Iss. 1 - Part 1 - May/June 1979, 25 pgs. (30.3 MB)
Polyphony - Vol. 5, Iss. 1 - Part 2 - May/June 1979, 19 pgs., 44 pgs. issue total (27.1 MB)
Polyphony - Vol. 5, Iss. 2 - Part 1 - July/August 1979, 23 pgs. (42.9 MB)
Polyphony - Vol. 5, Iss. 2 - Part 2 - July/August 1979, 17 pgs., 40 pgs. issue total (37.3 MB)


Polyphony Vol. 6 Index - (2.5 MB) - added 2/15/12

Polyphony Vol. 7 Index - (2.3 MB) - added 2/15/12

Polyphony - Vol. 7, Iss. 4 - Part 1- January/February 1982, 17 pgs. (40.7 MB) - added 2/15/13
Polyphony - Vol. 7, Iss. 4 - Part 2 - January/February 1982, 19 pgs., 36 pgs. issue total (47.3 MB) - added 2/15/13


Polyphony Vol. 8 Index - (1.6 MB) - added 2/15/12







Synthesis (SYNTH) (from the ancient Greek "with" and "placing") refers to a combination of two or more entities that together form something new; alternately, it refers to the creating of something by artificial means. The corresponding verb, to synthesize (or synthesise), means to make or form a synthesis.





Wizard (WYZRD) n 1. a person who practises or professes to practise magic or sorcery 2. a person who is outstandingly clever in some specified field; expert 3. a wise man 4. computing a computer program that guides a user through a complex task adj 5. informal chiefly superb; outstanding 6. of or relating to a wizard or wizardry [ variant of wissard, from wise 1 + -ard ] 'wizardly adj wizard c.1440, "philosopher, sage," from M.E. wys "wise" (see wise (adj.)) ard. zynyste "magic," zynys "sorcerer," zyne "witch," all from zinoti "to know." The ground sense is perhaps "to know the future." "wise magical power!"

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